P162B Cadillac Code - Remote Vehicle Speed Limiting Signal Message Counter Incorrect
Quick Answer
When a remote slow-down request is sent from OnStar, the vehicle communication interface module sends a serial data message to the Engine Control Module (ECM) indicating that reduced vehicle speed has been requested. Common causes include Faulty Vehicle Communication Interface Module, Vehicle Communication Interface Module harness is open or shorted, Vehicle Communication Interface Module circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P162B Cadillac indicates Remote Vehicle Speed Limiting Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Vehicle Communication Interface Module, Vehicle Communication Interface Module harness is open or shorted, Vehicle Communication Interface Module circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P162B Cadillac Description
The Diagnostic Trouble Code (DTC) will be set when the VIN embedded in the slow-down request does not match the VIN stored in the ECM or the rolling code counter embedded in the slow-down request does not increment for ten consecutive messages.
What are the Possible Causes of the DTC P162B Cadillac?
- Faulty Vehicle Communication Interface Module
- Vehicle Communication Interface Module harness is open or shorted
- Vehicle Communication Interface Module circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P162B Cadillac?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P162B Cadillac code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P162B Cadillac Code
1. What are the common symptoms of OBDII code P162B in a Cadillac related to the Remote Vehicle Speed Limiting Signal Message Counter Incorrect?
The common symptoms include the vehicle's speed being limited, reduced engine performance, and the check engine light illuminating on the dashboard.
2. What are some possible causes of OBDII code P162B in a Cadillac?
Potential causes of this code may include issues with the remote vehicle speed limiting system, a faulty speed sensor, a malfunctioning ECM, or wiring/connectivity problems.
3. How can I diagnose the OBDII code P162B in my Cadillac?
Diagnosing this code typically involves using a professional OBDII scanner to retrieve the specific fault codes, checking the speed sensor's functionality, inspecting the ECM connections, and testing the remote vehicle speed limiting system components.
4. Can I continue driving my Cadillac with the OBDII code P162B present?
It is not recommended to continue driving your Cadillac with this code present, as it may lead to reduced vehicle performance and potential safety issues due to the speed limitation.
5. How can I repair OBDII code P162B in my Cadillac?
Repairing this code involves addressing the root cause of the issue, which may include repairing or replacing faulty speed sensors, fixing wiring/connectivity problems, or recalibrating the remote vehicle speed limiting system.
6. Is it possible to reset the OBDII code P162B in my Cadillac without fixing the underlying issue?
Resetting the code without addressing the root cause may temporarily turn off the check engine light, but the issue will likely reoccur until the underlying problem is resolved.
7. Can a DIY enthusiast fix the OBDII code P162B in a Cadillac?
While some basic diagnostic steps can be taken by DIY enthusiasts, resolving the underlying issues related to this code may require professional automotive expertise and specialized tools.
8. How much does it typically cost to repair OBDII code P162B in a Cadillac?
The cost of repairing this code can vary depending on the specific issue causing it, the parts needed for replacement, and the labor rates of the mechanic. It's recommended to obtain quotes from reputable auto repair shops.
9. Are there any preventive measures to avoid OBDII code P162B in a Cadillac?
Regular maintenance, such as checking the speed sensor, ensuring proper ECM function, and inspecting wiring connections, can help prevent issues that may trigger this code in a Cadillac.
10. Can OBDII code P162B in a Cadillac affect other vehicle systems?
While this code specifically relates to the remote vehicle speed limiting system, unresolved issues causing this code may potentially impact other vehicle systems over time, leading to more complex problems.
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